Rotary motor.



E. R. MILLS & C. A. CONN- ROTARY MOTOR.

Arruornox Hmm rnn.1o,19oa.

914,155. Patented Mar. 2, v1909.

MM 0.a. Cm.

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EIB tfliiiQLS ANDCEAELES CONN, PITTS/TRG, PENNSYLVANIA, ASESGNORS TG llVLLAM S. ELLGTT, OFlTTSB-URG, PENNSYLVANIA.

f morele.

Speciostion of Letters Peten-t.

Patented. Merch 2, 1909.

pesca-son ses February rc, isos. Y serrer se. nessi.

Tardi "eoliens 'meg concern:

"He it'lnomi that We, EDWARD R. MiLLs a.. i @si sans A. QNN, `lwotlo of4 Pittsburg, iiirleglieny county, ennsylysnie, lieve in- 5 vented .e new and useful improvement in` Rotary Motors, of which the followingis e 'Ull, cleer, and exact description, reference being had to the accompanying drawings, forming part of' this'speci'lication, in Which- Figure 11 isI a llongitiidinel section of e motor embodying our invention, Fig. 2"is al loe used for e variety of purposes. s

Qrtrvinvention consists broadly in e rotary, me tor lieving `two .or more cylinders er renced in tendem,fwitli e piston'sheit err-- ten inl-through end'cornni'on to both cylin* detected' cerrying ye piston blede in esch cylindeigtiie beides in the difierent 'cylinders v g u* t diilerent ongles to the exis of 'the shaft, together with ineens Vfor supplying :ictneitingpliuid enclins oir, to'botli cylinders essere.

v precise nature of our invention Will be lostn-rgdorstoodby reference'fte the eccomi; dreyrings, inwlicliiwe lieve shown l be described, it being premised, et the invention is susceptible to y. embodiments, end that various enges' mcy be made in' the deteils of conction'snd' arrangement by those skilled d,dient departing-freni the spirit y tie oi V our inerenti-iones defined inthe appended; elisir" tires-e drawings, 'tne numeral 2 desigl ria-tes sjcylinder, which is seated stits ends in securedbetyveen 'the end liecds 3 end d', preterebly by ineens of long tension screws 5. which extend througlitine head i end through the Weils 'of the cylinder into threaded' engagement with tire need 3 These screws forni-js" convenient and simple ineens ier, scciiring tirs carts to ettier, 'end which enable -`them to e ,ree yrernoved when necessary; The cylinder 2- lies formed the motors, and is designed to provide at4 .'oneernoodinlent of our invention, and which E Well thereof a longitudinally yextending ed '.55 mission port 6, which et its rear end opens into en admission chamber Z in the roer heed '3, seid heed seing provided Withexscrew tlireedcd socket 8, or with other suitable Ineens, for tlie connection therewith 'of e motive fluid supply pipe.

The cylinder 2 is 'preterebly formedin two sections, end secured'between the meeting ends of these sections end dividing the interior of the cylinder into tWo seperate chambers, is e ring 9, which is shown in def teil in Fig. 3. Tliisringlisifjormed with the slots l@ end 11, tlfieslotv forming'e 'part of the admission port '6, and the slot 11 forming ert of an exhaust port 12, which is also termed in the Wells oi the cylinder sections.

This port 12 is closed et its rear end, but.

extends et its forward end thronghthe iol- Werd heed 1 to the. front face thereof Where it discharges, although the discharge may be `et any other convenient point. The ring 9 is also termed With the peripheral seats or openings 13 for the tension screws 5. Y The admission port 6 is connected with the Piston chambers of each of the cylinder sections by e plurality of cross-ports 14, and the exhaust port 12 is also connected with theinterior of both cylinder sections by a, plurality ci cross-ports 15. v

16 designates 'e piston shaft, which eX- tends through end is common to both cylinders. This slieit'is preferably journeled in removable bushings 16a seated in the re spective heads." cid shaft carries a. radially rnoveiole piston blade -17 in one of the cylinder chambers, end esecond and similar blade 18 the other cylinder chamber, these two blades being shown es et right .angles to each other. En the construction shown- Fig. 2, these oledesy ere each 'formed 'oi single piece, arranged to vslide radially in the shaft 16 so es to maintciu'contect at both edges et ell times with the interior Wall of the cylinder. The blades may, howeven'be mede'in sections, es shown et 19 and .20-in Fig. 5, end held in engagement et their outer edges with the inner circuler Wells of tire cylinder by' en interposed spring 21. In

tending exhaust .difierenl lvangles.

threaded shank 22, or is provided with other suitablemeans, for the attachment thereto of the part to be operated by the motor.

The operation is as followsz-Air or other motive Huid under pressureis admitted to the chamber 7 and passes thence through the longitudinally extending admission head and through thev cross-ports 14, -into both cylinders. It is exhausted by way of the cross-ports 15 into the longitudinally exort 1 2, and is discharged at the open end o said port. The operation may, however, be reversed, and the port 12 used as the admission port, and the port 6 as the exhaust port. Owin to the fact that the two pistons are arrange at an angle to each other, it will be seen that at the time the edges of one piston are closing the admission ports 14 of its cylinder, the admission oits of the other cylinder are open. Full) pressure is therefore always acting in at least one of the cylinders, and there are consequently .no deadA points. I

The motor herein described is very simple in its construction, andis of compact form, which enables it to' be used in various places Where the space'is limited,'such for instance as in thecleaning of boiler tubes where the motor is forced 'through the tube to be cleaned, the cleaning tool being attached directly to the end of the piston shaft. It is,

' however, adapted for a variety of other purposes, and we do not limit ourselves in this res ect. lar y adapted for use with compressed air as a motive fluid, but other motive Huid may be employed, .although less advantageously. lt will b e obvious that instead of using two cylinders in tandem, more than two cylinders maybe arranged about a common shaftin which case the iston blades .in the sevea1 ylinders will all preferably ybe at Various changes may also be made in the manner of forming and securing the parts.

The piston shaft 16 is preferably shouldered into the rear bushing 16, as shown at- 23, and its inner end is provided with a thrust head or collar 24, which bears a ainst the inner end of. said bushing, thus e ectually taking up the thrustsof the shaft.

We do not herein claim .broadly a motor having a piston shaft common to two or' The motor described is particu more cylinders and having p ranged in the respective cy inders at different angles to cach other, as such claims are made 1n the copending application of the .heads closing the outer ends of theI cylinders,

a separate partition ring situated between the-abutting end of the two cylinders,'a p'iston shaft concentric with the cylindersand `their heads, an eccentrically located piston shaft in each cylinderha piston in each piston "chamber secured to the pistonshaft, said pistons beingat an angle with relation to each other, through inlet and exhaust pas-` sages extending through'the walls of the cylinders and their separatingpartition, transverse ports leading from the through ports'into the piston'chambers, the rear cylinder head havingan inlet port connecting with one of the through passages, and an exhaust in the front head connecting with the through exhaust passage, substantially as described.

2. In a tande'rn rotaryv engine, a pair of cylinders arranged end to end, detachable heads closing the outer ends of the cylin-` ders, a separate partition ring securedy a countersunk recess in the ends of the abutting ends of thetwo cylinders, a piston shaft concentric with the cylinders and their heads, an eccentrically located piston chamber in each cylinder, a piston in eaclpipiston chamber secured to the pistonshaft, the said pistons bein at an angle with relation to each other, t rou h inlet and exhaust passages extending t rough the djdinders and` their separating' artition, tsansverse ports leading from the tirpugh' passagesr into the piston chambers, the frear' cylinder head having an inlet port connecting with the through passage, and an exhaust opening in the front head connecting with the through exhaust passage, substantially as described.

iston blades ar-` In testimony whereof, we have hereunto p' 

